Bedload and Size Distribution in Paved Gravel-Bed Streams
Bedload and Size Distribution in Paved Gravel-Bed Streams
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DOI：
10.1061/(asce)0733-9429(1983)109:5(793
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发表时间：
1983-05
影响因子：
2.4
通讯作者：
G. Parker;P. Klingeman;D. G. McLean
中科院分区：
文献类型：
--
作者：
G. Parker;P. Klingeman;D. G. McLean
现场数据用于研究铺砌砾石床溪流中床载的尺寸分布。相似性分析得出的结果是，当超过破坏路面的临界条件时，所有粒度范围都具有大致相同的可运输性。由于与相似性存在偏差，该结果仅大致正确。然而，足以证明开发计算总床载量的方法是合理的，该方法仅需要地下中值颗粒尺寸而不是尺寸分布。还开发了一种计算床载尺寸分布的方法，该方法可以解释与相似性的偏差。
Field data are used to study the size distribution of bedload in paved gravel-bed streams. Similarity analysis yields the results that all grain size ranges are of approximately equal transportability when the critical condition for breaking the pavement is exceeded. This result is only approximately correct due to deviations from similarity. However, it is adequate to justify development of a method for calculating total bedload, which requires only the subpavement median grain size rather than the size distribution. A method for calculating bedload size distribution that accounts for deviation from similarity is also developed.